Clean Text: Remove Duplicate Lines, Sort Lines, Extra Spaces and Invisible Characters

A list of email addresses gathered from several sources often has duplicate lines, trailing spaces or invisible characters that make comparisons go wrong.

What it can do

• Trim spaces and remove blank and duplicate lines.
• Sort lines, with Thai supported.
• Strip invisible zero-width characters, emoji, punctuation and HTML tags.
• Number lines, add a prefix or suffix, and join or split lines.

A fixed order of steps

The tool always applies steps in the same order: strip characters, split, trim, drop blanks, drop duplicates, sort, add prefix and suffix, number, then join. That makes the result predictable.

Invisible characters

An invisible character makes two lines that look identical count as different. Remove them first and the duplicate removal then works.

Privacy

It runs in your browser and your text is not sent out.